Picker for cranberries and the like



Jan. 5, 1954 T. B. DARLINGTON PICKER FOR CRANBERRIES AND THE LIKE 4 Sheets-Sheet 1 Filed Feb; 20, 1951 INVENTOR Thomas firz'zz E022 fiarlz'n fon.

Jan. 5, 1954 T. B. DARLINGTON PICKER FOR CRANBERRIES AND THE LIKE 4 Sheets-Sheet 2 Filed Feb. 20, 1951 INVENTOR 0416 an tam Thamas Erin tan ATToRNEYs Jan. 5, 1954 T. B. DARLINGTON PICKER FOR CRANBERRIES AND THE LIKE 4 Sheets-Sheet 3 Filed Feb. 20, 1951 INVENTOR Thom Brznfon flarlzn iolz.

TTORNEYS Jan. 5, 1954 'r. B. DARLINGTON PICKER FOR CRANBERRIES AND THE LIKE 4 Sheets-Sheet 4 Filed Feb. 20, 1951 INVENT R 715. omas Brmfon flarlz'nygon.

Patented Jan. 5, 1954 DFF l-CE 8 Claims.

The present invention vrelates to agricultural pickers, and especially to pickers for cranberries. .:A;DUII3OS'OfthG-iIlVeDfiOIIYiS to obtain. a greater "yield by mechanical" picking oiioranberries avoiding to-a'greaten-extent the tendency of :prior pickers to crush the berries, leave them on the -vineror cause themto drop K to the ground.

l A;=furtherpurpose is to obtain greater storage capacitywinH-apickerforxcranberries and the like.

. A-further-purposeis toobtaincloserconformity :--to the; ground configuration, and more reliably to ilollcwthe lower, level at which cranberries grow, minimizing the rdestruct-iveness :to cranberry vines; irom-smechanieal pickers. llnithis case-the :inventiontis useful-:in-reducing vine breakageuand also minimizingtheamount of uprooting of vines which takes g place.

-Afurther purpose is to .make the height of ipioking adjustable .inna zmanner which will be -.convenient to the operatonmand willnot require the operatorto-hold a manual adjustment.

A- further purpose. is to, increase the maneuverability-of .a cranberry picker and reduce the ground pressure, obtaining betterlflotation .on cranberry bogs with the tires employed.

m-A furtherpurpose is topickia cranberry bog without-relationto the direction of pruning, or the. direction of previouspicking.

A further. purpose is to. pick cranberries by a -.downwardv andrearward comb sweep .ona con- L veyor and then to move .the comb up along a .ipicking .wall which prevents the berries from escaping from the combs.

'A further .purposeiis to'hold the .vines during jpickingbya roller at the bottom of the. picking wall and desirably having the picking wall in tangential relation, so that 'the 'vines will be vpartially .or wholly.under the pressure of "the rollerwhen the comb makesjtspickingsweep.

AI further. purpose is tofeather the combs on the conveyor except near theposition of they Afurther,,purpose is. to divert. the pickin Wan upwardly and rearwar'dly adjoiningfthe position or I outward. movement .ofithe combs at the upper "reversebend, using this outward movement to Lthrovv the berries overthe picking wall.

.ATurtherpurpose' islto clear the picking combs :from several limitations.

of vines vby .aqcleaning comb which .engagescbetween thezteeth ofaeachpicking,comb as:the pickingcombmoves upward in trailing. relationship.

As. further purpose is to i provide .a discharging comb nearthetop of the rear stretch which engages. between the. teeth of the, pioking- -comb and I diverts the berries from the picking combs.

A further purpose is to rprovide side guards extending forwardly and upwardly at the position of the picking. sweep :of the. picking .combs.

Further purposes appear in the specification and in theclaims.

Inthe drawings .1 have. chosen toillustrate one .i only of the numerous. embodiments in which-my inventionimay. appear, .choosingthe.formushown from .the standpoints .of convenience. in illustration, satisfactory operationand clear demon- .stration of l the principles involved.

.Figure 1 is a. right .side.elevation of the cranberryv pickerv of..the invention.

tion and referring. to the drawings;

The picking of agriculturalpro'ducts suchas berries constitutes a major expense in many agricultural operations, andthisis particularly true inithe'raising of cranberries. i'The picking problem is'here especially"difiicultbecause' of the bog conditionsunder which cranberries are grown, making hand picking difficult and unpleasant, and adding greatly; to the problem of "mechanical picking.

Previous mechanical pickers Shave suiiered The operation has often been cumbersome and difficult, and theresults far from.satisfactoryudue to thellow yield, .the'large amount of destruction of vines, the poor maneuverability of the pickers and "the .necessity'in many prior devices of pickingxin a certain.'direction, such as the direction or, pruning and previous picking.

In accordance witnthe present invention, an improved picker has been devised which increases the yield; by picking morelthoronghlygand reducing the amount of crushing of; theljberries,

which is *readily'adjustablaas to theliheightrof picking without'imposing any; pull on. the ope-ra- "tortamaintainthe adjustment, and which is not destructive to the vines. The picker of the present invention has large storage capacity. It is unusually maneuverable. It picks in any direction and not merely in the direction of previous pruning or picking.

In accordance with the invention, the picker is provided with a forwardly directed picking wall, and a conveyor carrying picking combs makes a downward and rearward sweep through the vines and then travels upwardly along the picking wall with the ends in proximity less than the berry size to the picking wall, and then discharges into a hopper.

The vines are pressed downwardly at the bottom of the picking wall by a roller, and thus the tendency to uproot the vines is minimized.

The picking combs are feathered along the conveyor and near the reverse bends they make abnormal outward sweeps, which at the lower reverse bend accomplishes the picking and at the upper reverse bend discharges the berries from the picking comb. The feathering and the abnormal outward sweeps are accomplished by feathering levers which interconnect the particular comb with a portion of the conveyor removed longitudinally therefrom and desirably forwardly placed, for example the position of the next forward picking comb.

The picking wall is desirably upwardly and rearwardly deflected toward the top to provide for the discharging sweep of the picking comb.

The clearing of vines from the picking comb is aided by a cleaning comb which is suitably located between the front and rear stretches of the conveyor, and extends into the trailing teeth of the conveyor as the picking comb moves upward. The discharge is also desirably aided by a discharging comb which engages the picking comb at the top adjacent the point of discharge and tends to clear berries as well as vines and debris from the picking comb.

Side guards extend forwardly and suitably upwardly at the sides of the picking comb adjoining the point of picking sweep.

Considering now the construction of the vehicle in detail, a vehicle body 28 suitably of generally rectangular construction, is mounted on a pair of rear wheels 2| secured on suitable axles 22 positioned on the vehicle as later explained and carrying suitably pneumatic rubber tires 23. The wheels turn with the axles in suitable bearings not shown. Forwardly of the wheels 2| a roller 24 suitably of rubber or rubber covered, extends across the vehicle and is secured on an axle 25 journalled in the frame. A suitable engine, for example a comparatively light internal combustion engine 26, drives the vehicle, the drive being accomplished by a pulley 21 (Figure 2) driving a suitable speed reducing pulley 28 by a belt 30. The pulley 28 is on a stub shaft 3! suitably journalled in the body. The stub shaft carries sprocket 32 which drives speed reducing sprocket 33 by chain 34. The sprocket 33 is on shaft 35 extending across and suitably journalled in the frame. At the opposite end, shaft 35 carries pulley 36 which interconnects by belt 31 with pulley 38. Pulley 38 is mounted on stub shaft 48 suitably journalled in the frame, and carrying sprocket 4] which interconnects by chain 42 with sprocket 43 on one end of roller axle 25. Axle 22 on which the wheels 2| are mounted is interconnected for driving purposes with roller 24 by sprocket 44 (on the opposite end from sprocket 43 of roller axle 25), by chain 45 and spro k 46 on wheel axle 22. A

Stub shaft 41 carrying pulley 38 is journalled on clutch lever 41 pivoted on the frame at its remote end 48 and movable at its far end in a guide 58. The clutch lever when thrown to the right in Figure 1 relieves tension on belt 31 and causes the wheels to idle, and when thrown to the left (the position shown in Figure l), tensions the belt, desirably under the action of tension spring 5| acting from handle 52 at the back of the vehicle through cord 53 which is attached to the end of the clutch lever 41.

The axle 22 is pivoted and extends through arcuate adjustment slots 54 in the body and is swingably mounted on adjustment levers 55 pivoted at 58 at their opposite ends on the frame. Compression springs 51 counterbalance the axle.

At the front of the vehicle as best seen in Figure 4 a picking wall 60 extends generally vertically, consisting of a lower upright portion 62 and an upper upwardly and rearwardly extending portion 63, terminating in a top lip 64 which extends over shaft 35.

The picking wall is substantially tangential to roller 24 as best seen in Figure 4 so that the roller will grip the vines while picking takes place.

On either side of the picking wall, side walls 66 extend forwardly beyond the picking wall and at the bottom these side walls have further forward and upward extensions in the form of side guards 61 as best seen in Figures 1, 2 and 3 and 4, which desirably resemble horns and extend along the sides of the conveyor at the position of the picking sweep. These side guards are braced from the frame at 68. A guard it! keeps vines from tangling in sprocket 44.

Extending forward at either side of the main frame are side plates H which mount journals 12 (Figure 1) on which a cross top sprocket shaft 13 has bearing support near the top and front of the vehicle. The top sprocket shaft carries sprockets I4 at opposite ends, and at one end has a pulley 15 which interconnects with a pulley IS on shaft 35 by belt 11.

The belt is normally loose enough to slip and to apply power to the conveyor to be described. The belt is tensioned by pulley 18 (Figure 2), journalled on an idler shaft 88 mounted on clutch plate 8| pivoted at 82 on one of the side plates II. The pulley 18 is urged toward driving position by cord 82 and tension spring 83 acting from handle 52' (Figure 2). Positioned below and suitably somewhat behind sprockets 14 is a lower sprocket stub shaft 84 (one on each side of the machine) journalled on the side plates, and at the inner end carrying a sprocket 35 on each stub shaft.

Chains 86 at the two sides connect the upper and lower sprockets to form a conveyor having a forward downwardly moving stretch 81, a rearwardly upwardly moving stretch 88, a bottom reverse bend 98 and a top reverse bend 9i.

Picker combs are journalled on journals 82 secured at spaced intervals (3 to 10, 6 positions being shown) along the chains. The picker comb journals, as best seen in Figure 5, journal picker comb shafts 93 which extend across from the journal on one chain across to the journal on the other chain. The picker comb shafts desirably have tubular intermediate portions 94 which support suitably resilient comb teeth 95, desirably of arcuate form as shown in Figure 5, with the concavity or hollow of the arc forwardly directed. The picking comb teeth are suitably of spring wire 5 such as spring steel, Phosphor bronze or other suitable spring 'material V hit-h will yieidireaiitlily when itencounters*an obstruetion. The pacing (of the picking comb "teeth 'is or "course Hess than the jsize of thefcranberry so tha't the-cranberry will be 'heldby tlie comb.

The picking combs are feathered and angularly manipulated with respect to the conveyor by manipulating the shafts 4T3. Ea'h er 'the shafts has secured thereon a 3 feathering IeVer '96, -which,

' while it"may be provided jat only one endf is best provided at both ends 6f" the picking 'eombs 'suitably inside or toward the center of the vehicle with respect tothe conveyor chains. The-feathering levers have elongated -longi-tudinalprongs '91 *at their outer ends which fun'c'tion fas -cam irieansand extend around somesuitableTorward ing "comb, "which 1 acts as a follower. Thus the e fieot-of the piokingeomb levers is to "influence 1 the position "of the picking comb in 1=espons"e*to 'what' is "happening to the next forward picking comb with respect to the straightnessor bending of the'chain"atthat point. i

{W hen the chain is substantially *strai'ght the picking mb is in a trailing -position*extending diagonally outwardly as seen for 'example at QB on the down stretchand'at won the upstrtch in Figure 4. When the'reverse bend= approaches, the featheringleve'r is thrown to a position "I'M as-shown at the'bottomor -l e; as showmatthe 'top a't an angle 'to'thechain"(Figure-4). This '''causes the picking comb to "leave "its -feetther'ed position and undergoa-"sweep outwardly with reaspect to the "chain, and 'the outer en ds of thepi'cking comb move at that position 'muchm'ore the chain.

Both of thesesweeps-take place in-"advance of the completion of' the reversebendof the chain, since the feathering levers *ar'e aligned J straight with the chainas the picking comb "comesout of the'reverse"bendat the forward side. Therefore 'this-elmenznal sweep-in the arrangement "shown '-is primarily encountered as the pickingcomb approaches the reverse bend and begins to move through thereverse bend, andis not encountered "as-the picking combleaves the reverse bend.

it will I be evident "that on *"the "rear upward stretch of the conveyor, the "space 164"bet'ween the -picking wall- 60 and the '-outerendsof the picking combs isless Y than thesize' of' a-eranberry so that cranberries "which are picked "by the picking "sweep of the comb Hi3 moving downwardly "and rearwar'dly "are carried upwardly *along the picking "wall. Due to the Velocitywf -motion these berries=are carried"upwardlyfand the 5 ends or the picking comb move outwardly away from the conveyor along the rearwariily'a nw *upwardly deflecting portion 6315f the picking wall 1 as the picking combisw'ingsnutwardly at. [03.

-"A-cleaning comb I 05 "isi pos'iti'ond inside the conveyor extending-across betweenthefronttand freer stretches er the :chain, with'"resilient teeth [I] 6 extendingoutwardly and"engagingthespaces betiveen 'the trailing upwardly moving f'gpicking combs, and "this moves tangled vines lfrom" the ba'seo'fthe picking combsf'towardithe tips ofthe teethtoapointatwhich theycanbereaciiedby in'g co'nib's and aid Zin discharging rberri'es, the

picking 'conibs zit'th'e position I 03 encounter a, discharging cornb H3 whichsextends out downwardly into the path .o'f ith'e picking comb and en'gages the upper' sur'face 'of the teeth of the picking :comb *near the :e'n'd, pulling vines out of the picking -"COIXib and 'discharg'ing berfies. .A resilient sheet guard I I2 of rubber or the like ex- 'ten'ds rearwar'c'ily with respect to the top of discharging-comb'to deflect berries into the hopper. ierzn's l irextending diagonally rearwardlyfrom :the frame support th'e nischarging comb and the --sheet g-uard.

Once the berries pass over the picking wallthey "en'ter' a. hopper l P5 where *they are iheld until a *sxiitzible quantity' for discharge is reached. The

opper contains a 'febric bag "I [Shaving a metall-i'c 'frame l'H*eththefipperedge supported on rails l I 8 and bodilyremovablethrough the open back to berepla'c'ed byanother bag.

In operation it will be evident that the vehicle is started -'by*moving*the clutch lever -'4| to the positionto tension 'blt' '31 and 'thus "drive the front'roller 24 ean'd'the rear wheels 21. "If the height (if theiower part of the' picking conveyor is not t propei'lyfiadjusted for the "particular -conditions, :this is changed by pressing downward more or -less-on the-"handles 52 and 52 "and thus raising or lowering "the rear and tilting the conveyor down'or'up.

With *the vehicle in motion the picking conveyor is operated by applying tension of the pill- -ley 18'on the"b'e1t*11.

-The "picking "combs -.-move L down on the front stretch' of the 'conveyor in trailing'position, -and "as they *approach 'theposition I03 adjoining" the side guards "the-"pi'eking combs leave their trailin'g or feathered positien aii'tfbegin to move in *an outward, downward and rearward sweep through the vinesgl plaing the teeth-of the comb 'underthe' berries. vvhen the picking comb begins its upward travelin 'the rear" stretch 0f the conveyor, the-=berries =are7pu'l1ed-off 'the vine and "the w' ines I. in the main pull out *0: the "picking "cOIfibS. Thebei'ries are held by the picking comb ends of the'pi'cking'con'ib teeth.

During the picking-sweep the vinesare engaged by the? pressure 'of-theroiler 24*a'gainst the ground which m-inimizes or"reducesthetendency to up- "rootfthe-vines.

As the picking-combgmoveupwardly aiong the picking wall the"fberries -'-are carried to "a point near the top of the ipicking "wall which the ipickin'g comb begins *a 'discharging sweep, in washer leaves -its 'feathered"position and moves "outwardly"andrearwardly. Berries are thus discharged into the hopper by *atossing motion.

Theten dencyrfstangled vines to remain in the teeth of "the picking comb 'is overcome by the cleaning comb 3' I U5 which '-'engages between the "teeth *r'Jfthe"piekin comb-a the picking comb tra'vels 'upwardiyii flingfposition-"asc-shown in Figure? 'i'ilike'wise rthei clearing of vines and dis- *icharge of *berries -is' aided by the -"disoharging comb I i3, and the 'throwingwf berries upwardly '75 during dis'cim rge is prevented'by sheet guar'd I I2.

It will thus be evident that picking is accomplished with a minimum of vine damage and very little tendency to uproot the vines. The move ment of the picking comb through the vines being downward and rearward, tends to accomplish very complete picking and results in very little damage to the berries.

The device is highly maneuverable since the rear wheels are close together, and comparatively close to the front roller and the device can turn very readily to zig-zag back and forth across the cranberry bog. At any time that the picking height is to be adjusted, this can readily be done by adjusting the position of the back of the picker, thus tilting the picking conveyor up or down.

The storage capacity is large and it is not necessary to discharge the hopper frequently.

The operator can pick without regard to the direction of previous picking or pruning, and

thus the need for skill in operation is greatly reduced.

The tangency of the roller 24 with respect to the picking wall assures'maximum protection of the vines. The portions of the vines actually under the roller are of course those which have previously been picked, or those which are so close to the ground that they normally will not carry berries.

In view of my invention and disclosure variations and modifications to meet individual whim or particular need will doubtless become evident to others skilled in the art, to obtain all or part of the benefits of my invention, without copying the structure shown, and I, therefore, claim all such insofar as they fall within the reasonable spirit and scope of my claims.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

1. In a harvester for cranberries and the like, a vehicle, a roller adapted to contact the ground rotatably mounted on the vehicle, a generally vertical picking wall extending upwardly on the vehicle tangent to the roller from immediately adjacent the forward edge of the roller, and a generally vertical conveyor mounted on the vehicle in front of the picking wall having a plurality of movable picking combs disposed along the conveyor, the conveyor having a front stretch which is more remote from the picking wall, a rear stretch which is adjoining the picking wall and a reverse bend at the bottom, and means on the vehicle for moving the conveyor in a direction in which the front stretch moves downwardly and the rear stretch moves upwardly, the combs at the reverse bend at the bottom moving downwardly and rearwardly and the outer ends of the comb on the rear stretch being in proximity less than berry size to the picking wall.

2. In a harvester for cranberries and the like, a vehicle, a ground contacting roller rotatably mounted on the vehicle at one end adapted to be the forward end in motion of the vehicle, a generally vertical picking wall on the vehicle extending tangent to the roller from a point immedi ately adjoining the roller, a conveyor onthe vehicle generally vertical in front of the picking wall with respect to the roller having a plurality of picking combs disposed along the conveyor and pivotally connected to the conveyor, having relatively forward and relativelyrearward stretches with respect to the roller and areturnbend at the bottom, means on the vehicle for moving the conveyor in a direction which bring the forward stretch down and the rearward stretch up, the outer ends of the combs being in proximity less than berry size with respect to the picking wall on the rearward stretch, a cam element connected with each of the combs and adapted to swing the comb with respect to the conveyor, means on the conveyor for moving the cam element into a position to feather the combs in a diagonal trailing relationship on the front and rear stretches and mean on the conveyor for moving the cam element into a position for swinging the combs outwardly with respect to the feathering position at the reverse bend at the bottom between the front and rear stretches.

3. In a harvester for cranberries and the like, a vehicle, a ground contacting roller on the vehicle at an edge adapted to be a forward edge of the vehicle in motion, a generally vertical picking wall on the vehicle extending from immediately adjacent to the roller tangent to the roller above the roller and having an upwardly and rearwardly sloping portion toward the top thereof, a generally vertical conveyor on the vehicle in front of the picking wall with respect to the roller having a plurality of combs pivotally disposed along the conveyor, having a front stretch, a rear stretch and reverse bends at the top and bottom of the conveyor, means on the vehicle for moving the conveyor in a direction which carries the front stretch downward and the rear stretch upward, a cam on each of the combs, means on the conveyor for moving the cams into a position in which the combs are diagonally trailing on the rear stretch, means on the conveyor for moving the cams into a position in which the combs are swung outwardly with respect to the trailing position at the bottom of the conveyor and means on the conveyor for moving the cams into a position in which the combs are swung outwardly with respect to the trailing position opposite the rearward and upwardly extendin portion of the picking wall.

4. In a harvester for cranberries and the like, a vehicle, a generally vertical picking wall at one end of the vehicle, upper and lower sprockets mounted on the vehicle on the side of the picking wall remote from the rest of the vehicle, chain means extending around the sprockets and forming a front stretch remote from the picking wall and a rear stretch adjacent the picking wall, means on the vehicle for moving the chain means in a direction in which the front stretch moves downward and the rear stretch moves upward, combs pivotally mounted on the chain means at spaced positions, a feathering lever extending from each comb, the feathering levers having cam portions, followers on the chain means interconnected with the cam portions of the feathering levers and thereby manipulating the feathering levers and the combs in accordance with the direction of travel of the chain forwardly of a particular comb, the outer ends of the combs being in proximity less than berry size with respect to the picking wall on the rear stretch, whereby the combs are in diagonal trailing position on the rear stretch and at the reverse bend near the bottom of the chain means the combs swing outwardly and toward the picking wall.

5. In a harvester for cranberries and the like, a vehicle, a generally vertical picking wall at one end of the vehicle adapted to be the forward end and having, sprockets on the vehicle at the top and bottom on the side of the picking wall remote from the rest of the vehicle, chain means on the sprockets forming a vertical front stretch more remote from the picking wall and a vertical rear stretch adjacent the picking wall with reverse bends around the sprockets, means on the vehicle for driving the conveyor in a direction in which the front stretch moves downward and the rear stretch moves upward, picking combs individually pivotally mounted at spaced positions along the chain means, feathering levers extending forwardly with respect to the direction of motion of the conveyor from the picking combs and having cam means, followers on the conveyor engaging the cam means and manipulating the combs in accordance with the motion of the chain means forwardly of the particular comb, the outer ends of the combs bein in proximity less than berry size with respectto the picking wall, the combs being set with respect to the cam levers with the combs in feathered trailing position when the chain forwardly of the particular comb is straight and the combs thereby swinging outwardly whenever the chain means approaches a reverse bend.

6. In a harvester for cranberries and the like, a vehicle having a generally vertical picking wall at one end adapted tobe the forward end, a conveyor mounted on the vehicle on the side of the picking wall remote from the rest of the vehicle, having a plurality of movable picking combs along the conveyor, the conveyor being disposed vertically, means on the vehicle for moving the conveyor in a direction in which the conveyor stretch more remote from the picking wall goes downwardly and the conveyor stretch adjacent the pickin wall goes upwardly, the outer ends of the combs being in proximity less than the berry size with respect to the picking wall during the upward movement, and a comb positioned between the front and rear stretches engaging the picking combs having teeth extending rearwardly into the space between the teeth of the picking combs at the stretch adjacent the picking wall.

7. In a harvester for cranberries and the like, a vehicle having a generally vertical picking wall at one end adapted to be the forward end, a generally vertical conveyor positioned on the vehicle on the side of the picking wall remote from the rest of the vehicle and having a plurality of movable picking combs pivotally mounted at spaced positions alon the conveyor, the conveyor having a stretch more remote from the picking wall and a stretch adjacent the picking wall, means on the vehicle for moving the conveyor in a direction in which the stretch more remote from the picking wall moves downward and the stretch adjacent the picking wall moves upward,

10 the outer ends of the combs being in proximity less than the berry size with respect to the picking wall on the upwardly moving stretch, feathering levers extending from the picking combs in the direction forwardly with respect to the conveyor motion and having cam means thereon, followers on the conveyor interconnecting with the cam means and moving the feathering levers and the combs according to the direction of the conveyor forward of a particular comb, the feathering levers being disposed with respect to the comb to place the comb in diagonal trailing position when the conveyor is straight and to move the comb outwardly when the conveyor in advance of the comb makes a bend. 8. In a harvester for cranberries and the like, a vehicle having a vertical picking wall at one end adapted to be the forward end, a generally vertical conveyor on the vehicle on the side of the picking wall remote from the rest of the vehicle having a plurality of pivotally mounted picking combs disposed along the conveyor, the conveyor having two stretches, one relatively remote from the picking wall and one adjacent the picking wall, means on the vehicle for driving the conveyor in a direction in which the stretch remote from the picking wall goes downward and the stretch adjacent the picking wall moves upward, the outer ends of the combs moving in proximity less than the berry size with respect to the picking wall, feathering levers on the combs extending in the direction of forward movement of the conveyor and having cam means thereon, followers on the conveyor engaging the cam means and moving the feathering levers in accordance with the movement of the conveyor forward of a particular comb, the feathering lever being disposed with respect to the picking comb to maintain the picking comb in feathered trailing position When the conveyor is straight and to move the picking comb out when the conveyor makes a reverse bend, and a discharging comb mounted on the vehicle engaging the teeth of the picking comb at the upper reverse bend as the picking comb at that point moves outwardly.

THOMAS BRINTON DARLINGTON.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 30,064 Hemminway Sept. 18, 1860 159,316 Fulton Feb. 2, 1875 880,104 Schiller Feb. 25, 1908 1,572,025 Maglathlin Feb. 9, 1926 1,907,467 Tervo et a1. May 9, 1933 2,447,122 Horst, Jr. Aug. 17, 194 

